ABSTRACT
Government sectors, which were relatively reluctant to adopt cloud-based solutions due to security concerns, are also becoming interested and are predicted to switch to the cloud. Widespread mobile device access and the on-demand services offered by cloud providers amplify the security concerns and threats even further. Security issues may be raised in different layers in the cloud computing model. Individuals and enterprises working with big data systems are outsourcing the local data management to the cloud and are facilitated with greater flexibility, cost efficiency, and immense computation power. In response to newly introduced threats in cloud computing, several privacy and security models, techniques, and algorithms have been proposed. Privacy and security of data demand a rethinking and redesigning of data processing methodology in cloud computing platforms. Multiplexing the physical resources to virtual environments for different customers makes the cloud computing security challenges unique and complex.
